Integrated Engineering Ultra-Performance Valved Cat Back ExhaustNOTE: If installing to OEM down pipe you will require the IE Y Pipe Adaptor (sold separately) IE's catback exhaust is a complete performance upgrade that delivers an aggressive note from your iconic five cylinder engine while freeing the exhaust flow for the highest power levels from any turbo setup. Let your 2. 5L beast roar with the ultimate Audi RS3 exhaust system. Creating a proper Motorsport exhaust system requires a delicate balance of flow and
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Integrated Engineering Ultra-Performance Valved Cat Back Exhaust